| // run | |
| //go:build !386 | |
| // Copyright 2015 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| // Issue 12411. Loss of AX during %. | |
| package main | |
| func main() { | |
| x := f(4) | |
| if x != 0 { | |
| println("BUG: x=", x) | |
| } | |
| } | |
| //go:noinline | |
| func f(x int) int { | |
| // AX was live on entry to one of the % code generations, | |
| // and the % code generation smashed it. | |
| return ((2 * x) % 3) % (2 % ((x << 2) ^ (x % 3))) | |
| } |